Saturday: Battle at the Bay Ice Fishing Derby to benefit Wounded Warriors and Ogdensburg Volunteer Rescue Squad, 7 a.m. to 3 p.m., Wheathouse Bay; Registration is $30 for adults, $10 for children age 15 and under; hourly prizes for biggest fish, walleye or Northern Pike, first, second and third places. After party and award ceremony at Howies, New York Avenue; $500 for biggest pike and $500 for biggest walleye; registration forms available at Howies, Chamber office or email howiesicederby@yahoo.co

Saturday: Polar Bear 5 K Walk/Run along Maple City Trail sponsored by area Lions Clubs; day of race registration is $18; registration forms available at the Medicine Place or chamber office; Race day registration begins at 9 a.m. at Dobisky Center; long sleeve tees to all pre-registrants and as available day of race. Race begins at 10 a.m.

Saturday: Polar Bear Plunge, Municipal marina, Dobisky Center); registration begins at 11:30 a.m. and you jump in the order you register; jump begins at 1 p.m.; Costume contest plus the person bringing in the most in pledges wins 10% of the entire purse; hot tub, hot food, hot showers, door prizes and raffle; minimum pledge is $35; to n. To benefit the Ogdensburg Volunteer Rescue Squad and the chamber; registration forms at most banks, the Medicine Place, Phillips Diner, the chamber of commerce office, or online at ogdensburgny.com.

Saturday: Polar Bear Art Activity based on Eric Carleys illustrations in Polar Bear, Polar Bear What Do You Hear?; all ages welcome; 10:30 a.m. to 11:30 a.m., Ogdensburg Public Library, 312 Washington St.

Saturday, Feb. 23: SNOLF Snow Golf Tournament at Knights of Columbus and Father Martin Field to support the St. Lawrence Valley SPCA; Prizes for best team; putting contest; DJ; door prizes; and food. 10 a.m. to 4 p.m.